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<head><meta charset="utf-8"><title>Out of date information · t-compiler/wg-rustc-dev-guide · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/index.html">t-compiler/wg-rustc-dev-guide</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html">Out of date information</a></h3>

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<a name="221144123"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221144123" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Iñaki Garay <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221144123">(Dec 29 2020 at 16:04)</a>:</h4>
<p>Hello, I'm working on <a href="https://github.com/rust-lang/rustc-dev-guide/issues/924">issue 924</a> and going through the guide looking for things that are mentioned or implied as being possibly out of date. </p>
<p>The  contents of the <a href="https://rustc-dev-guide.rust-lang.org/traits/lowering-module.html">lowering module</a> subsection of the Trait Solving/Chalk-based trait solving section were removed in April. </p>
<p>I'd like to add some more contextual information but I'm having a hard time finding a narrow by searching for 'lowering module'. :P Any pointers to rustc PRs, zulip topics, or straight up information, would be appreciated.</p>



<a name="221144168"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221144168" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221144168">(Dec 29 2020 at 16:05)</a>:</h4>
<p>I think <span class="user-mention" data-user-id="232957">@Jack Huey</span> would be the one to ask</p>



<a name="221149241"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221149241" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221149241">(Dec 29 2020 at 17:08)</a>:</h4>
<p>I've been thinking about this regards to <a href="https://github.com/rust-lang/rust/issues/55100">https://github.com/rust-lang/rust/issues/55100</a></p>



<a name="221149313"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221149313" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221149313">(Dec 29 2020 at 17:09)</a>:</h4>
<p>I don't think we've discussed this as a WG yet fully, but I'll give my take</p>



<a name="221149389"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221149389" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221149389">(Dec 29 2020 at 17:10)</a>:</h4>
<p>I think for now, the right solution is probably to not talk about any details of Chalk integration at all</p>



<a name="221149429"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221149429" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221149429">(Dec 29 2020 at 17:11)</a>:</h4>
<p>The chalk book is supposed to have everything as far as how things work, what needs to be implemented to be used, etc.</p>



<a name="221149510"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221149510" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221149510">(Dec 29 2020 at 17:12)</a>:</h4>
<p>In the rustc dev guide, I think its probably appropriate to have a "there's a WIP chalk integration. See the chalk book for details of how that works"</p>



<a name="221149551"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221149551" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221149551">(Dec 29 2020 at 17:12)</a>:</h4>
<p>I would be happy with that, yeah</p>



<a name="221149606"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221149606" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221149606">(Dec 29 2020 at 17:13)</a>:</h4>
<p>The current landing page for chalk integration I think is good</p>



<a name="221149635"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221149635" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221149635">(Dec 29 2020 at 17:13)</a>:</h4>
<p>Looking now to just confirm we have the sub sections in the chalk book</p>



<a name="221149716"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221149716" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221149716">(Dec 29 2020 at 17:14)</a>:</h4>
<p>I think so</p>



<a name="221149722"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221149722" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221149722">(Dec 29 2020 at 17:14)</a>:</h4>
<p>So those can just be removed</p>



<a name="221149746"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221149746" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jack Huey <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221149746">(Dec 29 2020 at 17:15)</a>:</h4>
<p>(When that's done can you also close the rustc issue I linked)</p>



<a name="221157319"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221157319" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Iñaki Garay <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221157319">(Dec 29 2020 at 18:53)</a>:</h4>
<p><span class="user-mention" data-user-id="232545">@Joshua Nelson</span> so removing that subsection would be ok for the time being?</p>



<a name="221157437"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221157437" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Joshua Nelson <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221157437">(Dec 29 2020 at 18:55)</a>:</h4>
<p>yes, that would be great :) since it's documented in the chalk book already</p>



<a name="221406218"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/221406218" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Iñaki Garay <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#221406218">(Jan 02 2021 at 16:27)</a>:</h4>
<p>Going over the guide looking for out-of-date markers, I notice there are quite a few TODO markers as well. I was thinking it would be good to: </p>
<ul>
<li>remove them from the text</li>
<li>create issues for those TODOs that warrant it </li>
<li>at most, in a comment, annotate the TODO with a link to the corresponding issue so that if someone comes across it they go to the right place.</li>
</ul>
<p>I also think this should be done separately from the this issue <a href="https://github.com/rust-lang/rustc-dev-guide/issues/924">rustc-dev-guide#924</a> <br>
If there's agreement I'll create an issue for removing the TODOs with instructions.</p>



<a name="222237271"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/222237271" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Iñaki Garay <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#222237271">(Jan 10 2021 at 19:23)</a>:</h4>
<p>Does anyone know whether is it still the case that lldb-rust doesn't run on linux? I don't have access to a linux box atm, zulip search is inconclusive</p>



<a name="222237881"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/222237881" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Iñaki Garay <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#222237881">(Jan 10 2021 at 19:37)</a>:</h4>
<p>specifically asking about this <a href="https://rustc-dev-guide.rust-lang.org/debugging-support-in-rustc.html#lldb">bit</a> that says </p>
<blockquote>
<p>LLDB currently only works on macOS because of a dependency issue. This issue was easier to solve for macOS as compared to Linux. However, Tom has a possible solution which can enable us to ship LLDB everywhere.</p>
</blockquote>



<a name="222248802"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/222248802" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Noah Lev <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#222248802">(Jan 10 2021 at 23:55)</a>:</h4>
<p>That would seem weird...</p>



<a name="222248845"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/222248845" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Noah Lev <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#222248845">(Jan 10 2021 at 23:56)</a>:</h4>
<p>I'm not even sure how "Tom" is here <span aria-label="laughing" class="emoji emoji-1f606" role="img" title="laughing">:laughing:</span></p>



<a name="222248850"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/222248850" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Noah Lev <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#222248850">(Jan 10 2021 at 23:56)</a>:</h4>
<p>Ah, it says earlier on the page "Tom Tromey"</p>



<a name="222248865"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/222248865" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Noah Lev <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#222248865">(Jan 10 2021 at 23:57)</a>:</h4>
<p>Looks like that part is 2 years old so very possible that it's out of date.</p>



<a name="222251876"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out%20of%20date%20information/near/222251876" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/196385-t-compiler/wg-rustc-dev-guide/topic/Out.20of.20date.20information.html#222251876">(Jan 11 2021 at 01:16)</a>:</h4>
<p>We don't ship lldb with Rust anymore, though there was a short time we did so.</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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